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The ultraviolet landscape of two-Higgs doublet models
Manuel E Krauss1, Toby Opferkuch2, Florian Staub3,4
1Bethe Center for Theoretical Physics and Physikalisches Institut derUniversität Bonn, Nußallee 12, 53115 Bonn, Germany.
The European Physical Journal. C, Particles and Fields
|March 16, 2019
Summary
We explore ultraviolet completions of two-Higgs doublet models, finding that radiative corrections are crucial for Higgs mass and electroweak vacuum stability. Only a few models show significant mass differences for heavy Higgs states.
Area of Science:
- High Energy Physics
- Theoretical Physics
- Particle Physics
Background:
- Two-Higgs doublet models (2HDMs) are extensions of the Standard Model.
- Understanding their ultraviolet (UV) completions is vital for physics beyond the Standard Model.
- The behavior of quartic couplings at high scales impacts low-energy predictions.
Purpose of the Study:
- To investigate predictions of generic UV completions of 2HDMs.
- To analyze the impact of quartic couplings at the matching scale on the scalar mass spectrum.
- To determine the role of radiative corrections in Higgs mass calculations and electroweak vacuum stability.
Main Methods:
- Evaluating quartic couplings from a high matching scale down to the weak scale.
- Analyzing the scalar mass spectrum using renormalization group running.
- Investigating the relationship between mass splitting of heavy Higgs states and quartic couplings.
Main Results:
- Radiative corrections are essential for accurate Higgs mass and electroweak vacuum stability.
- Only a limited class of 2HDM UV completions exhibit significant mass splittings for heavy scalar states at the weak scale.
- A clear correlation exists between the maximal size of quartic couplings and the chosen matching scale.
Conclusions:
- The predictions of 2HDMs depend significantly on their UV completions.
- Careful consideration of radiative corrections is necessary for realistic 2HDM phenomenology.
- The structure of quartic couplings at high scales strongly influences the low-energy scalar mass spectrum.
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